I've seen many people unfortunately lose their zpools over this topic, so I'm going to try to provide as much detail as possible. If you don't want to read to the end then just go with ECC RAM. For those of you that want to understand just how destructive non-ECC RAM can be, then I'd encourage you to keep reading. Remember, ZFS itself functions entirely inside of system RAM. Normally your hardware RAID controller would do the same function as the ZFS code. And every hardware RAID controller you'...